Mathematics College

Can some one help me with these 2 questions I’ll give you brainliest

Answers

Answer 1

9514 1404 393

Answer:

2 + 5i

Step-by-step explanation:

Multiply numerator and denominator by the conjugate of the denominator.

[tex]\dfrac{(25+19i)}{(5-3i)}=\dfrac{(25+19i)(5+3i)}{(5-3i)(5+3i)}\\\\=\dfrac{68+170i}{34}=\boxed{2+5i}[/tex]

In general, the multiplication proceeds the way it would if i were a variable. The difference is that i² can be replaced by -1.

Related Questions

Solve the formula for the specified variable.
I = Prt
P=

Answers

to isolate variable P, you would divide rt on both sides, leaving you with I/rt=P

Step-by-step explanation:

I= PRTP=I/RT

................

The account title are:

No journal entry required, cash, accounts receivable, office supplies, prepaid rent, prepaid insurance, office equipment, accumulated depreciation - office equipment, accounts payable, notes payable, unearned revenue, common stock, dividends, services revenue, utilities expense.

Please help me solve this

Answers

Answer:

Cash 107000

Office equipment 30500

Common stock 137500

Evaluate 2^x for (a) x = - 2 and (b) x = 3 3. Write your answers in simplest form

Answers

Answer:

a) 1/4

b) 8

Step-by-step explanation:

a) a negative exponent becomes positive if you take the reciprocal fraction

1 /2² = 1/4 when x = -2

b) x = 3

2³ = 2 x 2 x 2 = 8

The value of the expression as; a) 1/4 and b) 8

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

We are given that [tex]2^x[/tex] for (a) x = - 2 and (b) x = 3

a) Since negative exponent becomes positive if we take the reciprocal fraction

1 /2² = 1/4

when x = -2

b) x = 3

2³ = 2 x 2 x 2 = 8

To know more about an expression follow;

brainly.com/question/19876186

#SPJ2

Evan has a loyalty card good for a discount at his local hardware store. The item he
wants to buy is priced at $14, before discount and tax. After the discount, and before
tax, the price is $11.76. Find the percent discount.

Answers

Answer:

14-11.76 = 2.24

2.24×100

14 = 16%

since, the discount percentage is 16%

The deminsions of a rectangler prism are 5cm, 6cm, and Xcm. Its surface area is 148 cm2. Find the other deminsion.

Answers

Answer:

The other dimension is x=4 cm

Step-by-step explanation:

Surface Area of a Rectangular Prism

Given a rectangular prism of dimension x, y, and z. Its surface area is calculated with the formula:

A = 2(xy + yz + xz)

We are given the dimensions y=5 cm and z=6 cm. We also have A=148 cm2. Substituting:

148 = 2(x*5 + 5*6 + x*6)

Dividing by 2:

74 = x*5 + 5*6 + x*6

Operating:

74 = 5x + 30 + 6x

Simplifying:

74 = 11x + 30

Subtracting 30:

44 = 11x

Dividing by 11:

x = 4 cm

The other dimension is x=4 cm

A. Dan should hope his flight uses configuration B.

B. Dan should hope his flight uses configuration A.

C. Dan is equally likely to get an aisle seat with whichever configuration his flight uses

D. There is not enough information to determine which configuration Dan should hope his flight uses

Answers

c should be it, try it and see

Answer:

The answer is A.

so billy has 10 apples if he subtracts it by 6 then times it by 3 then divides it by 2 what does he get?

Answers

Answer:

Step-by-step explanation:

3 × (10 - 6) ÷ 2 =?

The strategy that we are using here is PEMDAS:

First, you subtract 6 from 10 which is 4. 10 - 6 =4

Next, you multiply 4 by 3. 4 × 3 = 12

Then, you divide 12 by 2. 12 ÷ 2 = 6

Your answer is 6.

Your welcome. Showed my work below.

In the diagram, △RST∼△R′S′T′. Determine the length of RS. Show your work.
100 points!

Answers

Answer: 6 feet

Explanation: Since the triangles are similar, we can use the proportion 9/4=(12x+2)/(5x+1).

Cross multiplying 9*(5x+1) and 4*(12x+2) gives us 45x+9=48x+8.

Solving for x gives us 1/3.

You can check your work by plugging in x for the two equations, which gives us 6 (RS) and 8/3 (R’S’)

The scale factor is 4/9 (k) from 9k=4

6*4/9=8/3 and (8/3)/(4/9)=6

Answer:

RS = 6 feet

Step-by-step explanation:

Use ratios of corresponding sides:

TS/T'S' = RS/R'S'

Substitute and solve for x:

9/4 = (12x + 2)/(5x + 1)9(5x + 1) = 4(12x + 2)45x + 9 = 48x + 848x - 45x = 9 - 83x = 1x = 1/3

Find the length of RS:

RS = 12x + 2 = 12(1/3) + 2 = 4 + 2 = 6 feet

The ratio of tomatoes to pepper plants in the garden is 5:2. If there are 6 more tomato plants than pepper plants, how many pepper plants are in the garden?

Answers

The ratio from tomatoes to pepper plants is 5:2

Meaning there are 5 tomatoes and 2 pepper plants

In order to find a ratio where there are 6 more tomatoes than pepper plants you will have to multiply.

-----

When the ratio 5:2 is multiplied by 2

it equals 10:4

We can stop here because it is shown that now there are 6 more tomatoes than pepper plants.

-----

So there are:

10 tomatoes

and

4 pepper plants!

Help ASAP!! I’m confised and need help. What is angle 1 in the picture called?? Thanks!!

Answers

Answer:

obtuse angle

Step-by-step explanation:

as it is angle 1 is greater than 90

please help using elimination !

7x+2y=24 8x+2y=30

Answers

Answer:

-x=-6

x=6

7(6)+2y=24

42+2y=24

2y=24-42

2y=-18

y=-9

Step-by-step explanation:

I need to find the x

Answers

13.75 feet

The scale is 2.5, you can figure this out by 30/12 because they are corresponding legs, because the scale factor is 2.5, you will multiply 2.5x5.5. The 5.5 comes from 6 inches being one half of a foot.

Amy sold 338 flowers at the market today. If each bunch has 13 flowers in it, how many bunches did Amy sell?
A. 24
B. 26
C. 62
D. 23

Answers

Answer:

Step-by-step explanation:

338 / 13 = 26

26 batches of 13 flowers are equal to 338.

help me out
14 < n - 22

Answers

Answer:

14+22=36

36 is less than n

Step-by-step explanation:

The answer is you n = 8

need help on this question

Answers

Did you say nevermind so I will just take these free points

answer please quick i need help i only have 3 mins left

Answers

Answer:

70/100 ⋅ 80

0.7 ⋅ 80

7/10 ⋅ 80

Step-by-step explanation:

Brainliest please??

I think you have to divide 80 by 3 tell me if you don’t know how to

Laura bought y yards of fabric on Saturday. The next day, she went back and bought 3 more yards than she did on Saturday. If each yard of fabric costs $5, write an expression in simplest form for the total amount of money she spent on both days.

Answers

Answer:

(y+3)*5

im pretty sure this is correct

PLS HELP WILL GIVE U POINTS
Describe the histogram using the SUCS acronym

Answers

Can you define the SUCS acronym and maybe I’ll be able to help. I’ve never heard of it

The table shows the fees to park in a parking lot.
first hour = $1
second hour = $1.50
each additional hour or part of an hour = $2.
How much does it cost to park for 4 1/2 hours?

Answers

Answer:

$7.50

Step-by-step explanation:

4 1/2 hours total

1st hour = $1.00 ; 3 1/2 hrs remaining

2nd hour = $1.50 ; 2 1/2 hrs remaining

after 2 hours you pay $2 per hour so 2.5 x 2 = $5.00

Please help don’t guess pick answer in the bottom please I’m begging you I need this grade!!! 40pts!!!

Answers

Answer:

1) x/4 < 4 ⇒ x < 4*4 ⇒ x< 16

x = 4, 8, 12

2) x + 3 ≥ 15 ⇒ x ≥ 12

x = 12

3) 19 > x + 4 ⇒ 15 > x ⇒ x < 15

x = 4, 14

4) 12 ≥ 6x ⇒ 2 ≥ x ⇒ x ≤ 2

x = 1, 2

5) 7x ≤ 21 ⇒ x ≤ 3

x = 1, 2, 3

6) 5 + x < 7 ⇒ x< 2

x = 1

7) x - 5 < 17 ⇒ x < 22

x = 9, 14, 15

8) 3x ≥ 18 ⇒ x ≥ 6

x = 6, 11

9) 20 > x + 9 ⇒ 11 > x ⇒ x < 11

x = 4, 8

rewrite -3(5u+5)+10u in simplest form

Answers

Answer:

-5u-15

Step-by-step explanation:

-3(5u+5)+10u

-15u-15+10u

-5u-15

Remove the parentheses and distribute-3 through the parentheses you get -15u-15+10u
Collect the like term which is -15u and 10u
You get -5u-15 which is your answer

evaluate f(x)=x/x-5 when x=3

Answers

Answer:

Step-by-step explanation:

3/3-5=3/-2

what is 3/5 + 3/2 ?
I’ll mark as BRAINLIEST

Answers

Answer:

2 1/10

Step-by-step explanation:

PLZ HELP I’LL GIVE BRAINLIEST

Answers

i’m not sure if this is right but im guessing c.

I think it’s C as the answer

Choose the equivalent answer for 6/7.

- 0.857142 repeating, about 85.7%
- 0.92, 92%
- 0.9, 90%
- 0.88 repeating , about 88.8%

Answers

Answer:

0.85714286

Step-by-step explanation:

the first answer- about 85.7% :)

how do you solve this equation:
7-3 2/3

Answers

Answer:

Step-by-step explanation:

Using the order operations, we go left to right, multiplying 3 by 2/3, giving us 2. Then we subtract 7 - 2 = 5.

Evelyn jogs around the park every 4 1/4 minutes. How many laps will she jog in 38 1/4 minutes?
34
43
42 1/2
9

Answers

Answer:

Step-by-step explanation:

38.25 minutes × (1 lap)/(4.25 minutes) = 9 laps

9 laps is the answer

Darrion's car has a gas mileage of 30 miles per gallon. How many miles can Darrion travel on 13 gallons of gas?

Answers

30 miles = 1 gallon

To find for 13 gallons you do:

30 x 13 = 390

Darrion can do 390 miles with 13 gallons of gas

30 times 13 because each gallon will take him 30miles... which would be 390miles

Good luck Brainliest would be appreciated

Need help with math points and brainlest

Answers

Answer:

22.5 cm

Step-by-step explanation:

Answer:

22.5

Step-by-step explanation:

13.5 / 9 = x / 15

What is the length of the base of a right triangle with an area of 20 square meters and a height of 4 meters? 5 m 10 m 80 m 160 m

Answers

you find the area of a triangle by using 1/2*b*h where b is the base and h is the height. since we already know the area is 20 and the height is for you plus them in so the problem would be 20= 1/2 (b) (4) then you multiply what you know together to get 20= 2b and then isolate the b by dividing both sides by two so the base should be 10 m

Answer:

The answer is 10 20/4=5*2=10

Step-by-step explanation:

its 10

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